Observed changes in daily temperature and precipitation indices for southern Québec, 1960–2005

Yagouti, Abderrahmane; Boulet, Gilles; Vincent, Lucie A.; Vescovi, Luc; Mekis, Éva

doi:10.3137/ao.460204

Cited by 66 publications

(80 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Temperature. Many studies have demonstrated an increase in temperature in southern Canada in general and southern Quebec in particular (e.g., [9,11,33,34]). These studies showed that this warming was greater for winter than for other seasons.…”

Section: Discussionmentioning

confidence: 99%

“…Such hydrological changes, the earlier occurrence of snowmelt in the spring, in particular, are also observed in other regions of North America, (e.g., [5][6][7][8]). From a climate standpoint, temperature in that part of the St. Lawrence River watershed located in southern Quebec shows a significant increase from 1960 to 2005 [9], while precipitation as snow decreased since 1980 [10] and precipitation as low-intensity rainfalls increased [11].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Temporal Variability of Monthly Daily Extreme Water Levels in the St. Lawrence River at the Sorel Station from 1912 to 2010

Assani

Landry

Labrèche

et al. 2014

Water

View full text Add to dashboard Cite

Abstract:Although climate models predict that the impacts of climate change on the temporal variability of water levels in the St. Lawrence River will be seasonally-dependent, such a seasonal effect on the current variability of extreme water levels has never been analyzed. To address this, we analyzed the temporal variability of three hydrological variables (monthly daily maximums and minimums, as well as their ratio) of water levels in the St. Lawrence River measured at the Sorel station since 1912, as they relate to climate indices. As for stationarity, the shifts in the mean values of maximum and minimum water levels revealed by the Lombard method took place prior to 1970 for spring water levels, but after that year, for winter water levels. Changes in the winter stationarity are thought to mainly relate to the decreasing snowfall observed in the St. Lawrence River watershed after 1970. In contrast, for spring, these changes are likely primarily related to human activity (digging of the St. Lawrence Seaway and construction of dams). Two shifts in the mean values of fall minimum extreme water levels were highlighted. The first of these shifts, which occurred in the first half of the 1960s decade, can also be linked to human activity (digging of the St. Lawrence Seaway and construction of dams), whereas the second shift, observed after the 1970s for the months of November and December, can be linked to decreasing amounts of snow in winter. AMO (Atlantic Multidecadal Oscillation) is the climate index that is most frequently correlated negatively with the hydrologic variables, mainly in winter and spring.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Temporal Variability of Monthly Daily Extreme Water Levels in the St. Lawrence River at the Sorel Station from 1912 to 2010

Assani

Landry

Labrèche

et al. 2014

Water

View full text Add to dashboard Cite

show abstract

“…This increase in flood events also results in an increase in summer and fall floods, although spring floods are more numerous [58][59][60]. For example, between 1960 and 2010, over 60 flood events were recorded in south-central Québec catchments, with close to 50% occurring in the spring [58].…”

Section: Flood Eventsmentioning

confidence: 99%

“…Recent studies on flood frequency in the south-central Québec study area [28,29,59,60] show an increase in floods over the last three decades, with somewhat more pronounced peaks in the last few years ( Figure 6). This increase in flood events also results in an increase in summer and fall floods, although spring floods are more numerous [58][59][60].…”

Section: Flood Eventsmentioning

confidence: 99%

Distribution of Soil Organic Carbon in Riparian Forest Soils Affected by Frequent Floods (Southern Québec, Canada)

Saint-Laurent

Gervais-Beaulac

Paradis

et al. 2017

Forests

View full text Add to dashboard Cite

Abstract:Measuring soil organic carbon (SOC) in riparian forest soils affected by floods is crucial for evaluating their concentration and distribution along hydrological gradients (longitudinal and transversal). Hydromorphological factors (e.g., sedimentation vs. erosion, size of floodplain, flood recurrence) may be the cause of major variations in the concentration of organic matter and SOC in soils and could have a direct impact on C levels in soil profiles. For this study, SOC concentrations were assessed in riparian soils collected along transects perpendicular to the riverbanks which cross through inundated and non-inundated zones. Other soil properties (e.g., acidity, nitrogen, texture, bulk density) that may affect the concentration of SOC were also considered. The main purpose of this study was to assess SOC concentrations in soils subjected to flooding with those outside the flood zones, and also measure various soil properties (in surface soils and at various depths ranging from 0 to 100 cm) for each selected area. Across the various areas, SOC shows marked differences in concentration and spatial distribution, with the lowest values found in mineral soils affected by successive floods (recurrence of 0-20 years). SOC at 0-20 cm in depth was significantly lower in active floodplains (Tukey HSD test), with average values of 2.29 ± 1.64% compared to non-inundated soils (3.83 ± 2.22%). The proportion of C stocks calculated in soils (inundated vs. non-inundated zones) was significantly different, with average values of 38.22 ± 10.40 and 79.75 ± 29.47 t·ha −1 , respectively. Flood frequency appears to be a key factor in understanding the low SOC concentrations in floodplain soils subjected to high flood recurrence (0-20 years).

show abstract

“…In southern Québec, the average annual temperature has increased between 0.8°C and 1.6°C since the 1960s, accompanied by a longer growing season for plants (Yagouti et al 2008). For the coming decades, an increase between 2.4°C and 4.6°C of the average annual temperature is predicted if greenhouse gas emissions continue at the current rate throughout the 21st century (Ouranos 2015).…”

Section: Introductionmentioning

confidence: 99%

Temperature-manipulated dynamics and phenology ofMindarus abietinus(Hemiptera: Aphididae) in commercial Christmas tree plantations in Québec, Canada

2017

View full text Add to dashboard Cite

Abstract-The balsam twig aphid Mindarus abietinus Koch (Hemiptera: Aphididae) is a major pest of economic importance for the Christmas tree industry. Global warming during the 21st century could potentially increase local population densities and reinforce the pest status of this aphid in commercial fir (Abies Miller; Pinaceae) plantations in Québec, Canada. During this study, we tested the effects of a warmer environment on colony growth rates of M. abietinus and aphid morph composition during the second generation of its cycle, which is key to colony size growth and potential damage to Christmas trees. We monitored M. abietinus populations on two host fir species and one host fir variety, in order to understand the early season dynamics of this aphid and its host tree. It was possible to distinguish the two overlapping generations of winged aphids leaving colonies, which led to observing a much higher proportion of wingless daughters, produced by the stem mother, than what had previously been reported. Colony growth rates were significantly higher in a warmer environment than in the nearby plantation, suggesting that warmer temperatures in late spring and early summer may provide the suitable conditions required for M. abietinus colonies of greater density.Résumé-Le puceron des pousses du sapin Mindarus abietinus Koch (Hemiptera : Aphididae) est un ravageur d'importance économique en plantations commerciales d'arbres de Noël. Au 21 e siècle, le réchauffement climatique pourrait augmenter ses densités locales en plantation de sapin (Abies Miller ; Pinaceae) et renforcer son statut d'insecte ravageur au Québec, Canada. Nous avons testé expérimentalement les effets d'un environnement réchauffé sur la croissance des colonies de M. abietinus et le dimorphisme de progénitures de la fondatrice à la deuxième génération. Nous avons suivi les populations de M. abietinus sur trois arbres-hôtes du genre Abies, afin de mieux comprendre leurs interactions. Nous avons pu séparer les deux générations chevauchantes de pucerons ailés quittant les colonies, ce qui nous a permis d'observer une plus grande proportion de progénitures aptères de la fondatrice que dans les études antérieures. Le taux de croissance des colonies était plus élevé dans un environnement expérimental réchauffé que dans la plantation environnante, suggérant des conditions propices à des densités plus élevées de M. abietinus.

show abstract

Observed changes in daily temperature and precipitation indices for southern Québec, 1960–2005

Abstract: Trends and variations in daily temperature and precipitation indices in southern Québec

Cited by 66 publications

References 25 publications

Temporal Variability of Monthly Daily Extreme Water Levels in the St. Lawrence River at the Sorel Station from 1912 to 2010

Temporal Variability of Monthly Daily Extreme Water Levels in the St. Lawrence River at the Sorel Station from 1912 to 2010

Distribution of Soil Organic Carbon in Riparian Forest Soils Affected by Frequent Floods (Southern Québec, Canada)

Temperature-manipulated dynamics and phenology ofMindarus abietinus(Hemiptera: Aphididae) in commercial Christmas tree plantations in Québec, Canada

Contact Info

Product

Resources

About